Today Jim and I went for a hike up Twin Falls Trail along the South Branch of the Snoqualmie River. The falls we encountered is a result of glacial activity. The South Branch was a smaller glacier flowing into a much larger glacier in the Middle Branch. When the ice melted, it left a hangining valley at the confluence resulting in the water falls. Since the end of the ice ages, erosion has caused the falls to retreat up the valley of the South Branch about 1.5 miles.
Along the way there was evidence of soil creep (trees with curved trunks) and a nice debris flow comng down the side of th valley.
Tomorrow I head for Friday Harbor in the San Juan Islands.
No comments:
Post a Comment